Clutch mechanism



1. F. GODFREY.

CLUTCH MECHANISM. APPLICATION man lMM( 27..'1920.

19%9280 PatentedSept. 19, 1922...

W @6MM l @wf tirarse raras-retries.

JOHN F. eonrnnr, or nnnnanr, INDIANA, AssIcrNoia ro rIIn GODFREYcoNvnYoIt COMPANY, ornmrnanr,INnIANanconronnrroN or INDIANA. 1 y

CLUTCH I-/IncIIaNIsIvL .Application filed May 27,

Another object is to provide a novel andk practical yreversible clutcharrangement which is operated and controlled in a simple' and eflicientmanner.

These and other objects are accomplished by means of the arrangementdisclosed on' the accompanying sheet of drawings, in which- Figure l isa front elevation of a hoist embodying myy invention;

Figure 2 is a detail view lof my clutch control mechanism, parts beingshown in section for the sake kof clearness; and,

Figure 3 is a side elevation of the arrangement shown in Figure 2.`

The various novel 'features of my invention will be apparent from'thefollowing description and drawings and will be particularly pointed outin the appended claims. f .l v e Referring to the figures of thedrawings, it will be noted that I have disclosed my invention inconnection with a hoist operated by an electric motor 10, the shaft 11of said motor having secured thereto a pinion 12 which meshes with anddrives a relatively large gear 13 mounted on a shaft 14, which carriesconcentrically with the gear 13 a smaller gear 15, which meshes with anddrives a gear 16 mounted upon one end of ak shaft 17. Also mounted uponthe shaft 14 is a gear 18, which meshes with a gear 19 for driving thelatter, said gear 19 being` operatively connected to a drum 20 aroundwhich a cablevmay be wound for hoisting purposes. Loosely mounted uponthe shaft 14 near one end thereof is a clutch member 21, to which a gear22 is keyed, said gear 22 1920. r Serial No. 384,583.

directions by mechanism to be referredto hereinafter.4 Also looselymounted upon the shaft 17 1s another clutch vmember25, to

'which is keyed a gear`26, also meshingv with gear 23.` It will be notedthat in View of the fact that gears 15 and 16 are in mesh with so.A

each other, shafts 14 and 17 are caused tol y f out o-f engagement withits mating clutchl i member 25`by a coiled spring 30.

v t will be noted that collars 31 and32. arel secured to the shafts 14`and 17, respectively,

and rotate therewith. Abutment kmembers' 33 and 34 are loosely mountedupon the shafts 1,4 and ,17, respectively, said abut. ment membershavingcam surfaces 35 to cooperate with cam surfaces 36fof,v clutch con.-

trol members 37 and 38 mounted upon shafts 14 and 17, respectively, andlocated, respectively, between abutment memberf33 and clutch member-Q27,andabutment member 34 and clutch member 29. y,The control member 37 hasintegrally formed*therewith 'an arm 39, to whi'ch,fis secured acontrollever 40. The control member 37 also hasa secondintegrally formedarm 41, toy which is pivotally` connected one. end of a link 42, theother end., n i

of which is pivotally connected to an arm 43 integrally formed on theclutch control member38. It is apparent, therefore, that when the clutchcontrollever 40 is operated' in one direction or the other, both ofv theclutch control members 37 and 38 will be operated, and it will be seenthat as a resultof thecamsurfaces 35 and 36 on the members 33 and 37mounted on shaft 14 and of the members 34 and 33 on shaft 17 being ar-`ranged 'in a reverse order with respect to each other, that when theclutch lever 40 is thrown in one direction one of the movable clutchmembers will kbe moved into operative engagement with its mating clutchmember, and the other movable clutch member will be permitted to moveout ofoperative engagement with its mating clutch-member 110.vv v

under the tension of its coil spring. ln other words, by means ofhaving` the can clutch control members 37 and 3S interconnected andoperated' by the single control lever 40, the movable clutch memberswill be moved simultaneously in opposite directions for throwing in oneclutch and throwing out the other clutch, whereby the drum 24 may beVdriven in opposite or reverse directions for conveying aload in suchopposite directions.

Unless some special provision were made, the abutment members 33 and 34loosely mounted upon the rshaft 14 and l?, respectively, would, rotateon said shafts, prevent.- ing the proper functioning ofthe clutchcontrol membersand 3S. Accordingly, l have connected said camv abutmentmembers 33 'and 34 =by oppositely arranged links 44 and 45, which holdsaid members 33 and 34 against rotation. lt will be noted that saidmembers 33 and 34 abut the collars 3l and 32, respectively, so thatmovement of the control lever 40 causing aurelative movement between themembers 33 and 87 on one shaft and 34 and y3801i the other shaft causesor permits movement ofthe clutch members 27 and. 29 in oppositedirections.

'A similar clutch arrangement is provided forv operating the hoistingdrum 20, there being provided a control lever 46 connected to a camshaped clutch control member 47 having a cooperating abutment member 48which is loosely/mounted upon the shaft 14 and which is connected by twooppositely arranged links .49 to a sleeve 50 loosely mounted upon theshaft 17. The abutment member 48 also engages the collar 3l and thesleeve 50 engages the collar member 32. Whenthe control lever 46 isthrown in one direction, it causes the operation of the hoist drum 20,and when operated in the opposite direction, the clutch is thrown out.

By means of this arrangement simple7 ef ficient and improved clutchmechanism is asso provided wh ich adapted to meet all. of therequirements 'for successful commercial operation.

lt is my intention to cover all modifications of the invention fallingwithin the spirit and scope of the following claims.

l claim: h

l. .in clutch mechanism, the combination of a plurality of shafts,clutch members and lined collars carried by said shafts, abutment meansloosely mounted on each of said shafts between said'collars and clutchmembers andconnected to each other to prevent rotation of said abutmentmeans on said shafts, and clutch control means cooperating with saidabutment means and clutch me l; bers for operating said clutch members2. ln a clutch mechanism, the combination of plurality of parallelshafts, clutch members driven by said shafts, collars hired to saidshafts, abutment members loosely mounted on said shafts between thecollars and clutch members, links joining the two abutment membersuponthe adjacent shafts whereby the members are restrained from rotation,and clutch control meanslocated between the clutch members and abutmentmembers adapted to coact with the abutment members to operate the clutchmembers.

3, lin a clutch mechanism, the combination of a plurality of parallelshafts, clutch members dliven by said shafts, collars lined to .saidsiafts, cam abutment members loosely mounted on said shafts between thecollars and clutch members, a plurality of linhs joining the twoabutment members upon the adjacent shafts whereby the members arerestrained from rotation, and cam clutch control means` located betweenthe clutch members and abutment members adapted to coact with the camabutment members to operate the clutch members.

Signed at Chicago, illinois, this 25th day of May, 1920.

- JHN F. GODFREY.

